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тАО03-19-2003 01:29 PM
тАО03-19-2003 01:29 PM
vgextend to add alt path
Installed 2 new HP Tachyon TL/TS Fibre Channel Mass St
orage Adapters to "direct attach to it.
Carved up the array - fine. Created the device files - fine. I can see down both paths to the devices, but when I do a vgextend to add the alt path, I get:
vgextend: Couldn't open physical volume "/dev/dsk/c24t4d0":
I/O error
Is there an issue with this card direct attached (arbitrated loop) vs a fabric config (Brocade switches)
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тАО03-19-2003 01:34 PM
тАО03-19-2003 01:34 PM
Re: vgextend to add alt path
vgscan -a -v -P ?
(* -p for preview will not update /etc/lvmtab, but only display a list of responding disks *)
(* -a = search every controller and bus *)
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тАО03-19-2003 01:41 PM
тАО03-19-2003 01:41 PM
Re: vgextend to add alt path
What does
diskinfo /dev/rdsk/c24t4d0
show?
Also determine which td instance the other Tachyon is & run
fcmsutil /dev/tdX
where X=td instance
Possibility that the WWN for the Tachyon's was given incorrectly?
HTH,
Jeff
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тАО03-19-2003 02:07 PM
тАО03-19-2003 02:07 PM
Re: vgextend to add alt path
Check with your EMC support personnel and get the tool "inq". You can run this on your system and find if the disk is really the alternate disk for the other disk or not.
-Sri
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тАО03-20-2003 01:12 AM
тАО03-20-2003 01:12 AM
Re: vgextend to add alt path
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тАО03-20-2003 06:14 AM
тАО03-20-2003 06:14 AM
Re: vgextend to add alt path
ioscan shows the devices down both paths. diskinfo shows the alt path device as 0 (zero) size... BADDDD!
I then created a VG that went down the other path, and it wasn't able to do alt path either.
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тАО03-20-2003 11:44 AM
тАО03-20-2003 11:44 AM
Re: vgextend to add alt path
The 3 values that needed to be fixed were:
systemtype (2)
failovermode (0)
arraycommpath (0)
ie;
navicli -h
navicli -h
navicli -h
Rescanned the system and all the devices I had yesterday are now different names! Have to undo everything and try and get back to a clean lvmtab and start building the VG's over again.